Soon after Allan Pinkerton established his legendary detective agency in the United States, Canadians began seeking their services. Call in Pinkerton's is the history of the agency's work on behalf of Canadian governments and police forces.

During the late nineteenth century and early twentieth century, Pinkerton's operatives hunted legendary train robber Bill Miner in the woods of British Columbia, infiltrated German spy rings during World War I, and helped future prime minister John A. Macdonald to fend off the Fenian raids. They tracked down the Reno Brothers in Windsor, Ontario, and investigated labour unrest in Hamilton. The agency's detectives countered crimes all over Canada, particularly in the West and British Columbia. Pinkerton's activities went as far north as the Yukon, where fears were growing of an imminent invasion by a force of Americans from Alaska.

Call in Pinkerton's is the first book to chronicle the agency's work on behalf of Canadian governments and police forces. This entertaining book provides accounts of actual Pinkerton's investigations while detailing the day-to-day activities of a private detective at work. Call in Pinkerton's is a fascinating read for anyone with an interest in crime and espionage.